PRO PLAN Adult and Senior Natural Defences Dog Supplement has been formulated to help shield your dog from the inside out, as it contains yeast cell wall (source of beta-glucans), and is scientifically designed to help support immune health and natural antibody production.At PURINA PRO PLAN, we believe nutrition is the foundation for long-term health and well-being, PRO PLAN offers outstanding and great-tasting nutrition to keep your dog in long-term health, through main meals and complementary products. PRO PLAN has developed a range of targeted complementary products to help support with mobility, immunity, vitality, digestion, skin & coat and well-being.Key Benefits Help support natural antibody production, help support immune health, thanks to yeast cell wall containing beta glucans Our blend has been developed by veterinarians and pet nutritionists and is scientifically designed to help support natural defences and immune health for dogs Pro Plan chosen by remarkable owne